diff --git a/frameworks/core/components_ng/pattern/dialog/dialog_layout_algorithm.cpp b/frameworks/core/components_ng/pattern/dialog/dialog_layout_algorithm.cpp
index 2d075ea5a8fe311a715325463e4d59aea54f552c..0510a68afa10eedd38afa90aee0ee7b36d15ec8a 100644
--- a/frameworks/core/components_ng/pattern/dialog/dialog_layout_algorithm.cpp
+++ b/frameworks/core/components_ng/pattern/dialog/dialog_layout_algorithm.cpp
@@ -136,6 +136,7 @@ void DialogLayoutAlgorithm::AnalysisHeightOfChild(LayoutWrapper* layoutWrapper)
 void DialogLayoutAlgorithm::AnalysisLayoutOfContent(LayoutWrapper* layoutWrapper, const RefPtr<LayoutWrapper>& scroll)
 {
     auto text = scroll->GetAllChildrenWithBuild().front();
+    CHECK_NULL_VOID(text);
     auto layoutAlgorithmWrapper = DynamicCast<LayoutAlgorithmWrapper>(text->GetLayoutAlgorithm());
     CHECK_NULL_VOID(layoutAlgorithmWrapper);
     auto textLayoutAlgorithm = DynamicCast<TextLayoutAlgorithm>(layoutAlgorithmWrapper->GetLayoutAlgorithm());